Pyrgulopsis stearnsiana (H.A. Pilsbry, 1899)
Micromelania stefaniana (FOSSIL) (D. Pantanelli, 1879 †)
Islamia steffeki P. Glöer & J. Grego, 2015
Bythiospeum steinheimensis (FOSSIL) (F. Gottschick, 1921 †)
Lapparentia stenochora (FOSSIL) A.E.M. Cossmann, 1888 †
Pyrgulopsis sterilis R. Hershler, 1998
Bythiospeum sterkianum (S. Clessin, 1882)
Austropyrgus stevensmithi A. Clark, W.B. Miller& W.F. Ponder, 2003
Lisinskia stigmatica (FOSSIL) (Š. Brusina, 1897 †)
Belgrandia stochi (M. Bodon, G. Manganelli& F.L. Giusti, 1996)
Bania stosiciana (FOSSIL) (Š. Brusina, 1874 †)
Bythiospeum stoyanovi D.G. Georgiev, 2013
Radomaniola strandzhica D.G. Georgiev & P. Glöer,2013
Nematurella strauchi (FOSSIL) T. Kowalke& Reichenbacher, 2005 †
Baglivia streptogyra (FOSSIL) Š. Brusina, 1892 †
Hydrobia striata (G.F. Angas, 1842)
Micromelania striata (FOSSIL) Gorjanovic-Kramberger,1890 †
Martinietta striata (FOSSIL) (Fischer & W.A. Wenz,1914 †)
Muellerpalia striata (FOSSIL) K. Bandel, 2010 †
Staja striata (FOSSIL) (N.I. Andrusov, 1890 †)
Hydrobia striatella (FOSSIL) (J.P.S. Grateloup,1838 †)
Pontohydrobia striatocarinata (FOSSIL) (N.I. Andrusov, 1890 †)
Baglivia strongylogyra (FOSSIL) Š. Brusina, 1892 †
Hydrobia strongylostoma Š. Brusina, 1865
Polinskiola sturanyi (C.A. Westerlund, 1902)
Chilopyrgula sturanyi (Š. Brusina, 1896)
Prososthenia sturanyi (FOSSIL) (Bukowski, 1896 †)
Nematurella sturi (FOSSIL) (Š. Brusina, 1897 †)
Boetersiella sturmi (Rosenhauer, 1856)
Belgrandiella styriaca F.J. Stojaspal, 1978
Odontohydrobia styriaca (FOSSIL) M. Harzhauser & al.,2012 †
Pyrgula subarchimedis (FOSSIL) Friedberg, 1923 †
Hauffenia subcarinata J. Bole & F. Velkovrh,1987
Nematurella subcarinata (FOSSIL) (O.G. Michelotti, 1840 †)
Micromelania subcaspia (FOSSIL) N.I. Andrusov, 1923 †